121206116 has 6 divisors (see below), whose sum is σ = 212110710. Its totient is φ = 60603056.

The previous prime is 121206103. The next prime is 121206131. The reversal of 121206116 is 611602121.

It can be written as a sum of positive squares in only one way, i.e., 121000000 + 206116 = 11000^2 + 454^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15150761 + ... + 15150768.

It is an arithmetic number, because the mean of its divisors is an integer number (35351785).

Almost surely, 2^121206116 is an apocalyptic number.

It is an amenable number.

121206116 is a deficient number, since it is larger than the sum of its proper divisors (90904594).

121206116 is a wasteful number, since it uses less digits than its factorization.

121206116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30301533 (or 30301531 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 121206116 is about 11009.3649226465. The cubic root of 121206116 is about 494.8894301210.

Adding to 121206116 its reverse (611602121), we get a palindrome (732808237).

It can be divided in two parts, 121 and 206116, that multiplied together give a square (24940036 = 4994²).

The spelling of 121206116 in words is "one hundred twenty-one million, two hundred six thousand, one hundred sixteen".